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authorJosh Poimboeuf <jpoimboe@redhat.com>2022-04-18 09:50:20 -0700
committerPeter Zijlstra <peterz@infradead.org>2022-04-19 21:58:48 +0200
commit4a5de9b76fcb3f477f73d5a63f6e27709e8af81f (patch)
tree42d3716fefa8989fdeee094668022cde9264df49 /scripts/Makefile.build
parentd66e9d50ea5cd76b2c4875c758efad665283d7ad (diff)
downloadlinux-4a5de9b76fcb3f477f73d5a63f6e27709e8af81f.tar.bz2
objtool: Enable unreachable warnings for CLANG LTO
With IBT support in, objtool is now fully capable of following vmlinux code flow in LTO mode. Start reporting unreachable warnings for Clang LTO as well. Fixes: ed53a0d97192 ("x86/alternative: Use .ibt_endbr_seal to seal indirect calls") Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/7b12df54bceeb0761fe9fc8269ea0c00501214a9.1650300597.git.jpoimboe@redhat.com
Diffstat (limited to 'scripts/Makefile.build')
-rw-r--r--scripts/Makefile.build2
1 files changed, 1 insertions, 1 deletions
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 9717e6f6fb31..33c1ed581522 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -231,7 +231,7 @@ objtool_args = \
$(if $(part-of-module), --module) \
$(if $(CONFIG_X86_KERNEL_IBT), --lto --ibt) \
$(if $(CONFIG_FRAME_POINTER),, --no-fp) \
- $(if $(CONFIG_GCOV_KERNEL)$(CONFIG_LTO_CLANG), --no-unreachable)\
+ $(if $(CONFIG_GCOV_KERNEL), --no-unreachable) \
$(if $(CONFIG_RETPOLINE), --retpoline) \
$(if $(CONFIG_X86_SMAP), --uaccess) \
$(if $(CONFIG_FTRACE_MCOUNT_USE_OBJTOOL), --mcount) \